Exposure unit for lithographic plates



FIG. 1 is a front elevational view of an exposure unit for lithographic plates showing my new design, the rear being a mirror image but with the controls omitted;

FIG. 2 is a top plan view thereof;

FIG. 3 is right side elevational view thereof, the left side being a mirror image but with the electrical cord omitted;

FIG. 4 is a bottom plan view thereof. 

An ornamental design for an exposure unit for lithographic plates, substantially as shown and described. 